1、BRITISH STANDARD BS ISO 6489-4:2004 Agricultural vehicles Mechanical connections between towed and towing vehicles Part 4: Dimensions of piton-type coupling ICS 65.060.01; 65.060.10 BS ISO 6489-4:2004 This British Standard was published under the authority of the Standards Policy and Strategy Commit
2、tee on 30 March 2007 BSI 2007 ISBN 978 0 580 50434 1 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 6489-4:2004. The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery. A list
3、of organizations represented on AGE/6 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligati
4、ons. Amendments issued since publication Amd. No. Date Comments Reference number ISO 6489-4:2004(E)INTERNATIONAL STANDARD ISO 6489-4 First edition 2004-02-15 Agricultural vehicles Mechanical connections between towed and towing vehicles Part 4: Dimensions of piton-type coupling Vhicules agricoles Li
5、aisons mcaniques entre vhicules remorqueurs et vhicules remorqus Partie 4: Dimensions des dispositifs dattelage de type piton BS ISO 6489-4:2004ii iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work
6、 of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmen
7、tal, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The ma
8、in task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. At
9、tention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6489-4 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and fo
10、restry, Subcommittee SC 4, Tractors. ISO 6489 consists of the following parts, under the general title Agricultural vehicles Mechanical connections between towed and towing vehicles: Part 1: Dimensions of hitch-hooks Part 2: Specifications for clevis coupling 40 Part 3: Tractor drawbar Part 4: Dimen
11、sions of piton-type coupling BS ISO 6489-4:2004blank 1Agricultural vehicles Mechanical connections between towed and towing vehicles Part 4: Dimensions of piton-type coupling 1 Scope This part of ISO 6489 specifies the dimensional requirements for the piton-type coupling devices used in the attachme
12、nt to agricultural towing vehicles of towed, non-balanced trailers and implements equipped with a coupling ring specified in ISO 5692-1. Its purpose is to ensure the interchangeability of the mechanical connections on agricultural towing vehicles. It is applicable only in those cases where the verti
13、cal static load does not exceed 30 kN. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendmen
14、ts) applies. ISO 500 (all parts), Agricultural tractors Rear-mounted power take-off types 1, 2 and 3 ISO 5692-1: 1), Agricultural vehicles Mechanical connections on towed vehicles Part 1: Dimensions for hitch-rings 3 Terms and definitions For the purposes of this document, the following terms and de
15、finitions apply. 3.1 piton-type coupling device coupling device consisting of a pin (see Figure 1), mounting part and keeper 3.2 mounting part part needed to mount the pin and the keeper to an agricultural vehicle or to its mounting frame 3.3 keeper part that prevents unintentional uncoupling of the
16、 hitch-ring 1) To be published. (Revision of ISO 5692:1979) BS ISO 6489-4:20042 4 Dimensions 4.1 The keeper location and piton-type coupling device dimensions shall be in accordance with Figures 1 and 2. The keeper shall be contained within the maximum metal outline. 4.2 No part of the keeper shall
17、be allowed to extend beyond the hatched clearance lines (maximum metal condition illustrated) shown in Figure 2. 4.3 The manufacturer is responsible for both the design and the manufacturing quality of the piton-type coupling device. In order to prevent unintentional uncoupling of the hitch-ring whe
18、n subjected to the maximum design load, the distance between the top of the pin and the keeper shall not exceed 10 mm (see Figure 2). 4.4 The yaw requirement of 60 according to ISO 5692-1 is applicable for the device. Large tyres and narrow track settings on the towing vehicle can restrict this angl
19、e in service: when smaller tyres and/or wide track settings are used on the towing vehicle, this angle may be exceeded. As this could result in interference, it should be indicated on a decal or decals on or near the assembly, and in the operators manual. Dimensions in millimetres Figure 1 Dimension
20、s of pin 5 Location 5.1 The location of the piton-type coupling device shall be in accordance with Figure 3. 5.2 In order to allow for the travel angles defined in ISO 5692-1, the location of the piton-type coupling device shall be in accordance with the following: a) the piton-type coupling device
21、shall be mounted in the plane of the tractor longitudinal axis; b) the pin shall be located as high as possible, without any part of the pin-type coupling or its construction, keeper-plate, etc. entering the clearance zone specified for the PTO (power take-off) according to ISO 500. BS ISO 6489-4:20
22、04 3Dimensions in millimetres Figure 2 Dimensions of keeper limiting surface (maximum metal) BS ISO 6489-4:20044 a 50 mm to 160 mm.Figure 3 Pin PTO relations BS ISO 6489-4:2004 5Annex A (informative) Recommended mechanical connection combinations between towing and towed vehicles Towing vehicle Towe
23、d vehicle ISO 6489-1:1991 hook type ISO 5692:1979/ISO 5692-1: chitch-ring (50 mm hole centre, 30 mm ring diameter) ISO 5692:1979/ISO 5692-1: chitch-ring (50 mm hole centre, 30 mm ring diameter) ISO 6489-1:2001 hook type aISO 20019:2001 hitch-ring (50 mm hole centre, 30 mm to 41 mm ring diameter) ISO
24、 5692-2:2002 coupling ring (40 mm socket) ISO 8755:1986 40 mm drawbar coupling bISO 6489-2:2002 bolt type ISO 1102:1986 50 mm drawbar coupling bISO 6489-4:2004 piton type ISO 5692:1979/ISO 5692-1: chitch-ring (50 mm hole centre, 30 mm ring diameter) ISO 24347 ball type ISO 24347 d(80 mm ball diamete
25、r) Only these combinations are recommended. aConnecting a ISO 6489-1:2001 hook, manufactured in accordance with the maximum sizes permitted, to hitch-rings in accordance with ISO 5692-1 and of minimum dimensions (30 mm ring diameter) according to ISO 20019 could result in a “jerky” connection betwee
26、n the tractor and the trailer and result in less driving comfort. bPrimarily used on trailers towed behind trucks (on-road). cTo be published. (Revision of ISO 5692:1979) dUnder preparation. BS ISO 6489-4:20046 Bibliography 1 ISO 1102:1986, Commercial road vehicles Mechanical connections between tow
27、ing vehicles and trailers 50 mm drawbar couplings 2 ISO 5692:1979, Agricultural vehicles Mechanical connections on towed vehicles Hitch-rings Specifications 3 ISO 5692-2:2002, Agricultural vehicles Mechanical connections on towed vehicles Part 2: Coupling ring 40 with socket 4 ISO 6489-1:1991, Agric
28、ultural vehicles Mechanical connections on towing vehicles Part 1: Hook type 5 ISO 6489-1:2001, Agricultural vehicles Mechanical connections between towed and towing vehicles Part 1: Dimensions of hitch-hooks 6 ISO 6489-2:2002, Agricultural vehicles Mechanical connections between towed and towing ve
29、hicles Part 2: Specifications for clevis coupling 40 7 ISO 8755:1986, Commercial road vehicles Mechanical connections between towing vehicles and trailers 40 mm drawbar coupling 8 ISO 20019:2001, Agricultural vehicles Mechanical connections on towed vehicles Dimensions for hitch-rings 9 ISO 24347, A
30、gricultural vehicles Mechanical connections between towed and towing vehicles Dimensions of ball-type coupling device (80 mm) 2)2) Under preparation. BS ISO 6489-4:2004 blankBS ISO 6489-4:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national
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